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No he is actually right...S14 & S15 T28 turbos are the same - other than some have the divider on the turbine housing and some are journal bearing - they all have the same size housings and wheels. The only differences between the S14 & S15 BB turbos is the divider on the turbine housings(same for the JB T28)...the oil restrictor is the same...unless your speacking of a screw in restrictor but the size on those will depend on the oil pressure at the turbo for your application... trust me I know I rebuild them all the time. This has been gone over time and time again.
The S14 & S15 BB turbo is named GT2560R (R for BB) and the JB is named GT2560 (no R for JB)
JB = Journal Bearing
BB = Ball Bearing
I should actually make a thread one day with pix and measurements just to get this laid to rest once and for all.
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